Messages in this thread | | | Date | Wed, 24 Mar 2010 11:37:21 +0000 | From | Alan Cox <> | Subject | Re: [PATCH 4/7] hvc_console: Fix race between hvc_close and hvc_remove |
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On Sun, 21 Mar 2010 08:04:39 +1100 Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> On Fri, 2010-03-19 at 08:18 -0700, Greg Kroah-Hartman wrote: > > From: Amit Shah <amit.shah@redhat.com> > > > > Alan pointed out a race in the code where hvc_remove is invoked. The > > recent virtio_console work is the first user of hvc_remove(). > > This causes hangs during boot on pseries machines. Haven't had a chance > to track that down yet, but please revert > e74d098c66543d0731de62eb747ccd5b636a6f4c for now.
Its an exploitable hole so we should revert both the bug fix *and* the submission of the virtio console that makes the flaw triggerable, not jus tthe security fix.
Alan
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